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2. Vitamin D deficiency often occurs in laying ducks, which is caused by insufficient supply of vitamin D in the diet or insufficient exposure of the birds to sunlight. Therefore, it is often necessary to additionally add cod liver oil or vitamin A, D3, E, etc. to the duck feed.
3. Ducks usually lay eggs in the early morning. Therefore, ducks must maintain a high blood calcium concentration in the early morning, otherwise they will produce sand shell eggs, misshapen eggs, and even cause decreased egg production. When preparing egg-laying duck feeds, it is necessary to have a fast-absorbing calcium source and a slowly-absorbing calcium source. Stone powder and shell powder are usually used as calcium sources at the same time.
Duck feed preparation pay attention to timely nutrition
1. Ducks often eat mollusks such as fresh fish, shrimp and snails. These animals contain a substance called thiamine that can destroy vitamin B1, so ducks are prone to vitamin B1 deficiency. The disease occurs mostly in young ducklings and often occurs within 2 weeks of age. Therefore, if the duck can eat aquatic animals, increase the vitamin B1 content of the diet.